How long is the flight from Idaho to Cardiff?

KLM can get you from Idaho to Cardiff in just under 40h 05m. Your travel time can differ by up to . There are 4745 mi between Idaho and Cardiff.

In terms of precipitation, rainfall in Cardiff ranges from 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Cardiff when rainfall is around 2.0 in.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest time of day to fly from ID to CWL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Cardiff as you normally would.

What airport do you fly into for flights to Cardiff from Idaho?

If you book a flight to Cardiff from Idaho, you will be flying to Cardiff Wales, which is the city’s only airport. Cardiff Wales (CWL) is located 9.1 mi from the center of Cardiff.

Can I find deals for flights from Idaho to Cardiff that include hotel bookings?

Yes. In addition to deals on Idaho to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Idaho to Cardiff?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Cardiff.

Can I find deals for business class flights from Idaho to Cardiff?

Yes. Cheapflights offers flight deals from Idaho to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$778+ Flights from Idaho to Cardiff

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Cheap flight deals from Idaho to Cardiff

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Round-trip from	$778 (KLM)

Provider with most accurate pricing for Boise Air Term. Gowen Fld-Cardiff Wales flight deals.

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Cheapest flights from Idaho to Cardiff
Explore the most affordable flight options available from Idaho to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 9, 2026.

Sat 2/2110:45 amBOI - CWL

2 stops40h 05mKLM

Sat 2/2810:20 amCWL - BOI

2 stops41h 35mKLM

Deal found 1/7

$778

Best flights from Idaho to Cardiff
Discover carefully curated flight deals from Idaho to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 9, 2026.

Sat 2/2110:45 amBOI - CWL

2 stops40h 05mKLM

Sat 2/2810:20 amCWL - BOI

2 stops41h 35mKLM

Deal found 1/7

$778

Last-minute flights from Idaho to Cardiff
Discover last-minute flight deals from Idaho to Cardiff. Data last updated January 9, 2026 and is based on user searches.

Sat 2/2110:45 amBOI - CWL

2 stops40h 05mKLM

Sat 2/2810:20 amCWL - BOI

2 stops41h 35mKLM

Deal found 1/7

$778

Fly from

Fly to

Route

Depart

Return

Price

BoiseCardiff

BOI - CWL

BOICWL

Boise Air Term. Gowen Fld

Sat 2/21

10:45 am-9:50 am

2 stops40h 05m

Cardiff Wales

Sat 2/28

10:20 am-8:55 pm

2 stops41h 35m

$778

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Best time to book a flight from Idaho to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Idaho with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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Everything you need to know about your flight from Idaho to Cardiff

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Related info for your journey

What airport do you fly into for flights to Cardiff from Idaho?
If you book a flight to Cardiff from Idaho, you will be flying to Cardiff Wales, which is the city’s only airport. Cardiff Wales (CWL) is located 9.1 mi from the center of Cardiff.
How long is the flight from Idaho to Cardiff?
KLM can get you from Idaho to Cardiff in just under 40h 05m. Your travel time can differ by up to . There are 4745 mi between Idaho and Cardiff.
Can I find deals for flights from Idaho to Cardiff that include hotel bookings?
Yes. In addition to deals on Idaho to Cardiff flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Idaho to Cardiff?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Cardiff.
Can I find deals for business class flights from Idaho to Cardiff?
Yes. Cheapflights offers flight deals from Idaho to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$778+ Cheap flights from Idaho to Cardiff (CWL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/21. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Idaho to Cardiff

Keep the following information in mind while searching for Idaho to Cardiff flight deals. Data was last updated January 9, 2026.

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Cheapest flights from Idaho to CardiffExplore the most affordable flight options available from Idaho to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 9, 2026.

Explore the most affordable flight options available from Idaho to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 9, 2026.

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Best time to book a flight from Idaho to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Idaho with our price prediction graph.

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Everything you need to know about your flight from Idaho to Cardiff

Related info for your journey

Find useful and relevant information for your journey from Idaho to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Cardiff from Idaho?

How long is the flight from Idaho to Cardiff?

Can I find deals for flights from Idaho to Cardiff that include hotel bookings?

How can I find direct flights from Idaho to Cardiff?

Can I find deals for business class flights from Idaho to Cardiff?

Traveling to a place near Cardiff?

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Cheapest flights from Idaho to Cardiff
Explore the most affordable flight options available from Idaho to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 9, 2026.